After using tons of wordpress coupon plugins I found that none of them worked as well as retailmenot and couponcabin to name a few. Coupon popup was the best solution since it not only had pop under, but it also displayed the coupon code before sending the user off.

Our team has tested and used coupon popup to make sure it works flawlessly with current wordpress applications. If you are not completely satisfied with coupon popup for any reason, just let us know and we will gladly refund your purchase! Oh wait it’s free, I take that back… Enjoy! We hope you enjoy this easy to use coupon plugin for wordpress as much as we do.